| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-49895: drm/amd/display: Fix index out of bounds in DCN30 degamma hardware format translation |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Fix index out of bounds in DCN30 degamma hardware format translation |
| |
| This commit addresses a potential index out of bounds issue in the |
| `cm3_helper_translate_curve_to_degamma_hw_format` function in the DCN30 |
| color management module. The issue could occur when the index 'i' |
| exceeds the number of transfer function points (TRANSFER_FUNC_POINTS). |
| |
| The fix adds a check to ensure 'i' is within bounds before accessing the |
| transfer function points. If 'i' is out of bounds, the function returns |
| false to indicate an error. |
| |
| Reported by smatch: |
| drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:338 cm3_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.red' 1025 <= s32max |
| drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:339 cm3_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.green' 1025 <= s32max |
| drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:340 cm3_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.blue' 1025 <= s32max |
| |
| The Linux kernel CVE team has assigned CVE-2024-49895 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.227 with commit ad89f83343a501890cf082c8a584e96b59fe4015 |
| Fixed in 5.15.168 with commit de6ee4f9e6b1c36b4fdc7c345c1a6de9e246093e |
| Fixed in 6.1.113 with commit f3ccd855b4395ce65f10dd37847167f52e122b70 |
| Fixed in 6.6.55 with commit 0d38a0751143afc03faef02d55d31f70374ff843 |
| Fixed in 6.10.14 with commit f5c3d306de91a4b69cfe3eedb72b42d452593e42 |
| Fixed in 6.11.3 with commit c4fdc2d6fea129684b82bab90bb52fbace494a58 |
| Fixed in 6.12 with commit bc50b614d59990747dd5aeced9ec22f9258991ff |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-49895 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/ad89f83343a501890cf082c8a584e96b59fe4015 |
| https://git.kernel.org/stable/c/de6ee4f9e6b1c36b4fdc7c345c1a6de9e246093e |
| https://git.kernel.org/stable/c/f3ccd855b4395ce65f10dd37847167f52e122b70 |
| https://git.kernel.org/stable/c/0d38a0751143afc03faef02d55d31f70374ff843 |
| https://git.kernel.org/stable/c/f5c3d306de91a4b69cfe3eedb72b42d452593e42 |
| https://git.kernel.org/stable/c/c4fdc2d6fea129684b82bab90bb52fbace494a58 |
| https://git.kernel.org/stable/c/bc50b614d59990747dd5aeced9ec22f9258991ff |
